Apparatus for measuring the flow of fluids.



- T. B. WYLIEL APPARATUS FOR MEASURING THE FLOW OF FLUIDS.

APPLIOATION FILED JUNE 5, 1911. 3; 3. l 9,41 3. 1 Patented Sept. 15, 1914.,

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WlTNESSES T. it. WYLIE. APPARATUS FOR MEASURING THE FLOW 0F FLUIDS.

APPLICATION FILED JUNE 5, 1911. a 1,1 10,413. v Patented Sept. 15, 1914,

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ENVENTOR WITNESSES 1 UNITED STATES PATEN OFFICE.

anon/as B. WYLIE, or rr-r'rsnunen, PENNSYLVANIA.

arena-ares son lunasunine THE FLOW or FLUIDS. r

1,110,413. pe ifi i n of Letters Patent Patented se ta-5,1914.

Application filed June 5, 191 Serial No. 631,489. 7

To all whomit may concern: sents a conduit through which hot gas, as "Be it known that I, THOMAS B. WYLIE, a for example, the waste gas from a blast furresident of Pittsburgh, in the county of nace,'is flowing to a hot blast stove. In this Allegheny and State of Pennsylvania, have case, the flow from the conduit is shown as invented a new and useful Improvement in controlled by the well known Spear-man 60 Apparatus for llleasuring the Flow of valve whose pipe or conduit member 3, Fluids, of which the following is a full, forms a continuation of the conduit 2 and clear, and exact description, reference being has a sliding valve plate 4, actuated by rack had to the accompanying drawings, forming and pinion 6, on a shaft-carrying .hand

'10 part of this specification, in which wheel 7. Alongside the hot; blast valve, I 66 Figure 1 is a vertical section showing one provideanother conduit 8, containing a form of'lnyimproved apparatus; Fig. 2 is valve chamber 9, inclosing a slide valve 10. a similar view showing a modified form; The valve is connected with the valve 4 Fig. 3 is a View similar to Fig. 2, showing a by the bar 11, extending through a stuffing 1 slight modification; Fig. i is a view similar box in chamber 9, so that as the valve -l is 70 to Fig. 1, showing another form of the in- 'opened or closed, the valve 10 is moved corvention; and Fig. 5 is a sectional side elevarespondingly. At the inlet side of the contion showing a temperature correction deduit 8 is placed a meter 12-, between which vice which I prefer to employ with my apand the valve chamber 9 is arranged a valve paratus. chamber 13, containing valves 14, secured to 75 My invention relates to measuring the valve rod 15. The rod 15 is secured to a flow of fluids passing through a conduit in flexible diaphra 'm 16, which divides this cases where the condition of the fluid is such portion of the valve chamber into two parts,

i that it would injuriously affect rdinary the left hand chamber 17, being connectedmeters or measuring devices. This condiby'pipe 18 with the hot blast conduit 2. The

. tion may result from an injurious temperavalve'rod may be supported on any suitable ture of thefiuid, or from. other factors, such antifriction devices. shown at 19, and the as solid matter carried by the fluid. valves will be moved by the diaphragm to.

The invention is also applicable to measequalize the pressures on both sides. I also 30 uring the flow of fluids where the condiprefer to use a. similar valve system on the tions of the fluid are such as to pressure or outlet side of the chamber 9, the valve chamotherwise that it would not properly drive her being marked 20, the valves 21, and the an ordinary meter. diaphragm 22. The chamber 23 in this case The invention consists in measuring the is connected by pipe 24, leading into the outvolume of such a fluid by measuring'the vollet side of the hot blast valve 4. From this 90. ume of another independent fluid, whose chamber 20 leads a pipe 25, having two volume of How is maintained proportionate valved branches 20 and 27, the pipe 27 exto that of the fluid to be measured; tending into the pipe member 3 of theSpean It also consists in maintaining the {no man valve, while the pipe 26 opens to the 4 portionate flow of the two fluids by .regulatatmosphere. In case there is a suctic-nor ing devices, such as pressure plates or diapartial vacuum in the pipe 3, the valve in phragms, arranged to arhaintain the same the inlet pipe 26 is opened, and that in pipe pressure on the inlet, or -the'inlet and out- 527 closed, so that the fluid being directly let sidesof the control valve or throat for measured will pass into the conduit 3. In T the fluid which is directly measured. When all other cases, the fluid being directly applied to a fluid having an injurious temmeasured may be allowed to exhaust into peratu're, I also preferably employ a temthe air. perature recorder by means of which a tem- In the use of this apparatus, air is passed perature correction may bemade in order to through the meter 12 and the'valve 10, when -obtain the correct proportionatevolumes of the two fluids. v

the drawings, in which I show pre- 4 valves will be equalized, thus giving a pro ferredtlorms of my invention as applied to portionate flow often cool'l'luid, such asair, I measuring a gas having, an iniuriously high throu h the meter and valve system. Thereperature, referring to 1,2 reprel fore, by the measuring of this. other fluid The pressures on both sides of the control hotblast gas passes through the conduit 2. 9

, the flow of hotblastgas may be measured,

knowing the proportion of the volume of flow.

In order to compensate for the difierence in temperatures, where the fluid to be measured has an injurious temperature, and to introduce a temperature correction, I also preferably employ a temperature recorder in connection with this system; In the form shown in Fig. 5, 28 represents the dial of a meter of the ordinary type having a chart driven by the meter, and 29 is a pointer, which is actuated by a well known type of recording thermometer, the steelcapillary tube'30 of which extends intothe hot blast conduit 2, so that the paper disk or chart placed on the dial will receive the combined volume and temperature record.

I thus not only record the volume of the cooler proportionate fluid being measured, but also provide for a constant temperature correction by which correction the volume of hot gas flowing may be determined. This combined temperature and volume recorder is not claimed herein, as the same is covered in my copending application, Serial No. 631,490 filed June 5th, 1911.

In Fig. 2, I show a form similar to that shown in Fig. 1. exceptthat the control valves for the flow of the two fluids are actuated by the pressures. Thus, the valve 4 of the hot blast'main 2. will be lifted from its seat by the pressure and will actuate the piston valve 1O movable in the slotted cylinder 31, thus opening and closing the slots which admit the fluid being directly measured. In this form, 12 is the meter, 13 one of the valve chambers, and 20 the other valve chamber on the outlet side. 32 is a diaphragm connected with the stem 33 of the valve 4 and further serving to equalize the pressures. In this form, the

fluid bein directly measured is admitted through pipe 27 into the hot blast passage.

Fig. 3 shows a form similar to F i 2, except that the outlet pipe?! for t e fluid oiling directly measured opens to the atmosp ere. I p

In Fig. 4, I show a form'similar to that of Fig. 1, exce t that the valve 4" moves within a valve ox or chamber, the rod 11 connecting the valves extending through stufling boxes in both the chambers 34 and 9, and being actuated by hand wheel 7 acting on rack 5 betweenthe valve chambars.

In certain cases, such for example as measuring stack drafts, the conditions of the fluid are such as to pressure or other wise that they will not properly drive a meter through which thev are passed, even if the temperature or 0t er conditions are proper.

{.Ehe advantages of my invention will be ohvibl fi tultlidssiskilled;m the art, since the invention enables the flow of ,fluidsto be measured where either the condition of the fluid to be measured is such-that it would injuriousl owing to injurious temperature, or t e presence of foreign matter carried by the fluid,

such as to pressure orotherwis'e, that it would not properly drive an ordinary meter. By causing a flow of another fluidnpropoi ured, and measuringthe flow of this-other ing the temperature correction, where the temperature of the fluid to be measured injurious.

and arrangement of the apparatus, different fluids may-lie employed to pass through the measuring device, and other changes. may be made without departing from my vention.

I claim: I

it to flow through a controllable opening, causing another fluid to flow through another controllable opening having its area definitely roportioned to the area of the first name opening, maintaining-a difference in the pressures at opposite sides of the last named opening which is proportional to the difference in pressures at the opposite sides of the first named opening, and measuring the fluid which flows through the second o, ening; substantially as described.

2.; pparatus for measuring the flowof fluid, comprising a conduit for the fluid to be measured, said conduit havin a restricted ortion, another conduit fluid: two chambers which are respectively" connected to the first named conduit at opposite sides of its restricted portion, a. pressure plate ineach of said chambers, said plates being respectively exposed on one side to the. action of the pressures existing in the portions of the first named conduit to which their chambers are -connected, a valve carried by one cf the plates and 'controlling the flow of fluid throu h the second conduit into said chamber, a va ve connected to the other plate and controlling the flow of fluid out of that chamber a measurin opening between the two chambers, an 'means 0 second conduit; substantially as described.

3. Apparatus for measuring the flow of fluid, comprising a conduit for the .fiuid to ed opening, another conduit fluid and having a measuring valve controlling said restricte opening.

affect a measuring apparatus,-

&c.,' or where the condition of the fluid is tionate to the flow of the fluid to be proportional fluid, I 'am enabled to measure the flow of the fluid as desired withoutcx posing the measuring devices to 11:. The temperature device is of importance ingiv- Many changes may be made in the term 1. The method of measuring the volume of flow of a fluid, which consists in causing,

or anotherlit r measuring the flow through the...

be measured, said conduit havin a restrictor another dportion, fa

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another. valve controllin the measuring port on of the second conc uit and connected to the first named valve, and means for maintaining at opposite sides of said measurin portion a di erence in pressure which 1s proportional to the difference in pressure fluid, connected valates to control the flow of both fluids, means for maintaining proportionate differences of pressure at opposite sides of the two valves, and'a temperature recorder arranged to measure the temperature of one of the fluids; substantially as described. v

In testimony whereof, I have hereunto set my hand. i a T. B. WYLIE. Witnesses: p

G. M.-Vn:ns, H. M. CORWIN. 

